oysteikt/mpvipc-async
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mpvipc-async
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api: split into several files

This commit is contained in:
Oystein Tveit 2024-04-30 10:21:12 +02:00
parent 3be7b2bda6
commit 60802e1158
5 changed files with 307 additions and 293 deletions
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378
src/api.rs → src/core_api.rs
View File

@ -1,50 +1,17 @@
use futures::StreamExt;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::{
collections::HashMap,
fmt::{self, Display},
};
use std::{collections::HashMap, fmt};
use tokio::{
net::UnixStream,
sync::{broadcast, mpsc, oneshot},
};
use crate::ipc::{MpvIpc, MpvIpcCommand, MpvIpcEvent, MpvIpcResponse};
use crate::message_parser::TypeHandler;
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Event {
Shutdown,
StartFile,
EndFile,
FileLoaded,
TracksChanged,
TrackSwitched,
Idle,
Pause,
Unpause,
Tick,
VideoReconfig,
AudioReconfig,
MetadataUpdate,
Seek,
PlaybackRestart,
PropertyChange { id: usize, property: Property },
ChapterChange,
ClientMessage { args: Vec<String> },
Unimplemented,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Property {
Path(Option<String>),
Pause(bool),
PlaybackTime(Option<f64>),
Duration(Option<f64>),
Metadata(Option<HashMap<String, MpvDataType>>),
Unknown { name: String, data: MpvDataType },
}
use crate::{
ipc::{MpvIpc, MpvIpcCommand, MpvIpcEvent, MpvIpcResponse},
message_parser::TypeHandler,
Error, ErrorCode, Event,
};
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum MpvCommand {
@ -139,24 +106,6 @@ impl IntoRawCommandPart for SeekOptions {
}
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ErrorCode {
MpvError(String),
JsonParseError(String),
ConnectError(String),
JsonContainsUnexptectedType,
UnexpectedResult,
UnexpectedValue,
MissingValue,
UnsupportedType,
ValueDoesNotContainBool,
ValueDoesNotContainF64,
ValueDoesNotContainHashMap,
ValueDoesNotContainPlaylist,
ValueDoesNotContainString,
ValueDoesNotContainUsize,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct PlaylistEntry {
pub id: usize,
@ -220,52 +169,6 @@ where
}
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Error(pub ErrorCode);
impl Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl std::error::Error for Error {}
impl Display for ErrorCode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ErrorCode::ConnectError(ref msg) => f.write_str(&format!("ConnectError: {}", msg)),
ErrorCode::JsonParseError(ref msg) => f.write_str(&format!("JsonParseError: {}", msg)),
ErrorCode::MpvError(ref msg) => f.write_str(&format!("MpvError: {}", msg)),
ErrorCode::JsonContainsUnexptectedType => {
f.write_str("Mpv sent a value with an unexpected type")
}
ErrorCode::UnexpectedResult => f.write_str("Unexpected result received"),
ErrorCode::UnexpectedValue => f.write_str("Unexpected value received"),
ErrorCode::MissingValue => f.write_str("Missing value"),
ErrorCode::UnsupportedType => f.write_str("Unsupported type received"),
ErrorCode::ValueDoesNotContainBool => {
f.write_str("The received value is not of type \'std::bool\'")
}
ErrorCode::ValueDoesNotContainF64 => {
f.write_str("The received value is not of type \'std::f64\'")
}
ErrorCode::ValueDoesNotContainHashMap => {
f.write_str("The received value is not of type \'std::collections::HashMap\'")
}
ErrorCode::ValueDoesNotContainPlaylist => {
f.write_str("The received value is not of type \'mpvipc::Playlist\'")
}
ErrorCode::ValueDoesNotContainString => {
f.write_str("The received value is not of type \'std::string::String\'")
}
ErrorCode::ValueDoesNotContainUsize => {
f.write_str("The received value is not of type \'std::usize\'")
}
}
}
}
#[derive(Clone)]
pub struct Mpv {
command_sender: mpsc::Sender<(MpvIpcCommand, oneshot::Sender<MpvIpcResponse>)>,
@ -323,7 +226,7 @@ impl Mpv {
pub async fn get_event_stream(&self) -> impl futures::Stream<Item = Result<Event, Error>> {
tokio_stream::wrappers::BroadcastStream::new(self.broadcast_channel.subscribe()).map(
|event| match event {
Ok(event) => Mpv::map_event(event),
Ok(event) => crate::event_parser::map_event(event),
Err(_) => Err(Error(ErrorCode::ConnectError(
"Failed to receive event".to_string(),
))),
@ -331,179 +234,46 @@ impl Mpv {
)
}
fn map_event(raw_event: MpvIpcEvent) -> Result<Event, Error> {
let MpvIpcEvent(event) = raw_event;
event
.as_object()
.ok_or(Error(ErrorCode::JsonContainsUnexptectedType))
.and_then(|event| {
let event_name = event
.get("event")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
match event_name {
"shutdown" => Ok(Event::Shutdown),
"start-file" => Ok(Event::StartFile),
"end-file" => Ok(Event::EndFile),
"file-loaded" => Ok(Event::FileLoaded),
"tracks-changed" => Ok(Event::TracksChanged),
"track-switched" => Ok(Event::TrackSwitched),
"idle" => Ok(Event::Idle),
"pause" => Ok(Event::Pause),
"unpause" => Ok(Event::Unpause),
"tick" => Ok(Event::Tick),
"video-reconfig" => Ok(Event::VideoReconfig),
"audio-reconfig" => Ok(Event::AudioReconfig),
"metadata-update" => Ok(Event::MetadataUpdate),
"seek" => Ok(Event::Seek),
"playback-restart" => Ok(Event::PlaybackRestart),
"property-change" => {
let id = event
.get("id")
.ok_or(Error(ErrorCode::MissingValue))?
.as_u64()
.ok_or(Error(ErrorCode::ValueDoesNotContainUsize))?
as usize;
let property_name = event
.get("name")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
match property_name {
"path" => {
let path = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.map(|s| s.to_string());
Ok(Event::PropertyChange {
id,
property: Property::Path(path),
})
}
"pause" => {
let pause = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.as_bool()
.ok_or(Error(ErrorCode::ValueDoesNotContainBool))?;
Ok(Event::PropertyChange {
id,
property: Property::Pause(pause),
})
}
// TODO: missing cases
_ => {
let data = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.clone();
Ok(Event::PropertyChange {
id,
property: Property::Unknown {
name: property_name.to_string(),
// TODO: fix
data: MpvDataType::Double(data.as_f64().unwrap_or(0.0)),
},
})
}
}
}
"chapter-change" => Ok(Event::ChapterChange),
"client-message" => {
let args = event
.get("args")
.ok_or(Error(ErrorCode::MissingValue))?
.as_array()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?
.iter()
.map(|arg| {
arg.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))
.map(|s| s.to_string())
})
.collect::<Result<Vec<String>, Error>>()?;
Ok(Event::ClientMessage { args })
}
_ => Ok(Event::Unimplemented),
}
})
}
/// # Description
///
/// Retrieves the property value from mpv.
///
/// ## Supported types
/// - String
/// - bool
/// - HashMap<String, String> (e.g. for the 'metadata' property)
/// - Vec<PlaylistEntry> (for the 'playlist' property)
/// - usize
/// - f64
///
/// ## Input arguments
///
/// - **property** defines the mpv property that should be retrieved
///
/// # Example
/// ```
/// use mpvipc::{Mpv, Error};
/// async fn main() -> Result<(), Error> {
/// let mpv = Mpv::connect("/tmp/mpvsocket")?;
/// let paused: bool = mpv.get_property("pause").await?;
/// let title: String = mpv.get_property("media-title").await?;
/// Ok(())
/// }
/// ```
pub async fn get_property<T: GetPropertyTypeHandler>(
/// Run a custom command.
/// This should only be used if the desired command is not implemented
/// with [MpvCommand].
pub async fn run_command_raw(
&self,
property: &str,
) -> Result<T, Error> {
T::get_property_generic(self, property).await
}
/// # Description
///
/// Retrieves the property value from mpv.
/// The result is always of type String, regardless of the type of the value of the mpv property
///
/// ## Input arguments
///
/// - **property** defines the mpv property that should be retrieved
///
/// # Example
///
/// ```
/// use mpvipc::{Mpv, Error};
/// fn main() -> Result<(), Error> {
/// let mpv = Mpv::connect("/tmp/mpvsocket")?;
/// let title = mpv.get_property_string("media-title")?;
/// Ok(())
/// }
/// ```
pub async fn get_property_value(&self, property: &str) -> Result<Value, Error> {
command: &str,
args: &[&str],
) -> Result<Option<Value>, Error> {
let command = Vec::from(
[command]
.iter()
.chain(args.iter())
.map(|s| s.to_string())
.collect::<Vec<String>>()
.as_slice(),
);
let (res_tx, res_rx) = oneshot::channel();
self.command_sender
.send((MpvIpcCommand::GetProperty(property.to_owned()), res_tx))
.send((MpvIpcCommand::Command(command), res_tx))
.await
.map_err(|_| {
Error(ErrorCode::ConnectError(
"Failed to send command".to_string(),
))
})?;
match res_rx.await {
Ok(MpvIpcResponse(response)) => {
response.and_then(|value| value.ok_or(Error(ErrorCode::MissingValue)))
}
Ok(MpvIpcResponse(response)) => response,
Err(err) => Err(Error(ErrorCode::ConnectError(err.to_string()))),
}
}
async fn run_command_raw_ignore_value(
&self,
command: &str,
args: &[&str],
) -> Result<(), Error> {
self.run_command_raw(command, args).await.map(|_| ())
}
/// # Description
///
/// Runs mpv commands. The arguments are passed as a String-Vector reference:
@ -630,46 +400,76 @@ impl Mpv {
result
}
/// Run a custom command.
/// This should only be used if the desired command is not implemented
/// with [MpvCommand].
pub async fn run_command_raw(
/// # Description
///
/// Retrieves the property value from mpv.
///
/// ## Supported types
/// - String
/// - bool
/// - HashMap<String, String> (e.g. for the 'metadata' property)
/// - Vec<PlaylistEntry> (for the 'playlist' property)
/// - usize
/// - f64
///
/// ## Input arguments
///
/// - **property** defines the mpv property that should be retrieved
///
/// # Example
/// ```
/// use mpvipc::{Mpv, Error};
/// async fn main() -> Result<(), Error> {
/// let mpv = Mpv::connect("/tmp/mpvsocket")?;
/// let paused: bool = mpv.get_property("pause").await?;
/// let title: String = mpv.get_property("media-title").await?;
/// Ok(())
/// }
/// ```
pub async fn get_property<T: GetPropertyTypeHandler>(
&self,
command: &str,
args: &[&str],
) -> Result<Option<Value>, Error> {
let command = Vec::from(
[command]
.iter()
.chain(args.iter())
.map(|s| s.to_string())
.collect::<Vec<String>>()
.as_slice(),
);
property: &str,
) -> Result<T, Error> {
T::get_property_generic(self, property).await
}
/// # Description
///
/// Retrieves the property value from mpv.
/// The result is always of type String, regardless of the type of the value of the mpv property
///
/// ## Input arguments
///
/// - **property** defines the mpv property that should be retrieved
///
/// # Example
///
/// ```
/// use mpvipc::{Mpv, Error};
/// fn main() -> Result<(), Error> {
/// let mpv = Mpv::connect("/tmp/mpvsocket")?;
/// let title = mpv.get_property_string("media-title")?;
/// Ok(())
/// }
/// ```
pub async fn get_property_value(&self, property: &str) -> Result<Value, Error> {
let (res_tx, res_rx) = oneshot::channel();
self.command_sender
.send((MpvIpcCommand::Command(command), res_tx))
.send((MpvIpcCommand::GetProperty(property.to_owned()), res_tx))
.await
.map_err(|_| {
Error(ErrorCode::ConnectError(
"Failed to send command".to_string(),
))
})?;
match res_rx.await {
Ok(MpvIpcResponse(response)) => response,
Ok(MpvIpcResponse(response)) => {
response.and_then(|value| value.ok_or(Error(ErrorCode::MissingValue)))
}
Err(err) => Err(Error(ErrorCode::ConnectError(err.to_string()))),
}
}
async fn run_command_raw_ignore_value(
&self,
command: &str,
args: &[&str],
) -> Result<(), Error> {
self.run_command_raw(command, args).await.map(|_| ())
}
/// # Description
///
/// Sets the mpv property _<property>_ to _<value>_.

68
src/error.rs Normal file
View File

@ -0,0 +1,68 @@
use core::fmt;
use std::fmt::Display;
use serde::{Deserialize, Serialize};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub enum ErrorCode {
MpvError(String),
JsonParseError(String),
ConnectError(String),
JsonContainsUnexptectedType,
UnexpectedResult,
UnexpectedValue,
MissingValue,
UnsupportedType,
ValueDoesNotContainBool,
ValueDoesNotContainF64,
ValueDoesNotContainHashMap,
ValueDoesNotContainPlaylist,
ValueDoesNotContainString,
ValueDoesNotContainUsize,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Error(pub ErrorCode);
impl Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
Display::fmt(&self.0, f)
}
}
impl std::error::Error for Error {}
impl Display for ErrorCode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ErrorCode::ConnectError(ref msg) => f.write_str(&format!("ConnectError: {}", msg)),
ErrorCode::JsonParseError(ref msg) => f.write_str(&format!("JsonParseError: {}", msg)),
ErrorCode::MpvError(ref msg) => f.write_str(&format!("MpvError: {}", msg)),
ErrorCode::JsonContainsUnexptectedType => {
f.write_str("Mpv sent a value with an unexpected type")
}
ErrorCode::UnexpectedResult => f.write_str("Unexpected result received"),
ErrorCode::UnexpectedValue => f.write_str("Unexpected value received"),
ErrorCode::MissingValue => f.write_str("Missing value"),
ErrorCode::UnsupportedType => f.write_str("Unsupported type received"),
ErrorCode::ValueDoesNotContainBool => {
f.write_str("The received value is not of type \'std::bool\'")
}
ErrorCode::ValueDoesNotContainF64 => {
f.write_str("The received value is not of type \'std::f64\'")
}
ErrorCode::ValueDoesNotContainHashMap => {
f.write_str("The received value is not of type \'std::collections::HashMap\'")
}
ErrorCode::ValueDoesNotContainPlaylist => {
f.write_str("The received value is not of type \'mpvipc::Playlist\'")
}
ErrorCode::ValueDoesNotContainString => {
f.write_str("The received value is not of type \'std::string::String\'")
}
ErrorCode::ValueDoesNotContainUsize => {
f.write_str("The received value is not of type \'std::usize\'")
}
}
}
}

141
src/event_parser.rs Normal file
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@ -0,0 +1,141 @@
use std::collections::HashMap;
use serde::{Deserialize, Serialize};
use crate::{ipc::MpvIpcEvent, Error, ErrorCode, MpvDataType};
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Property {
Path(Option<String>),
Pause(bool),
PlaybackTime(Option<f64>),
Duration(Option<f64>),
Metadata(Option<HashMap<String, MpvDataType>>),
Unknown { name: String, data: MpvDataType },
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Event {
Shutdown,
StartFile,
EndFile,
FileLoaded,
TracksChanged,
TrackSwitched,
Idle,
Pause,
Unpause,
Tick,
VideoReconfig,
AudioReconfig,
MetadataUpdate,
Seek,
PlaybackRestart,
PropertyChange { id: usize, property: Property },
ChapterChange,
ClientMessage { args: Vec<String> },
Unimplemented,
}
pub(crate) fn map_event(raw_event: MpvIpcEvent) -> Result<Event, Error> {
let MpvIpcEvent(event) = raw_event;
event
.as_object()
.ok_or(Error(ErrorCode::JsonContainsUnexptectedType))
.and_then(|event| {
let event_name = event
.get("event")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
match event_name {
"shutdown" => Ok(Event::Shutdown),
"start-file" => Ok(Event::StartFile),
"end-file" => Ok(Event::EndFile),
"file-loaded" => Ok(Event::FileLoaded),
"tracks-changed" => Ok(Event::TracksChanged),
"track-switched" => Ok(Event::TrackSwitched),
"idle" => Ok(Event::Idle),
"pause" => Ok(Event::Pause),
"unpause" => Ok(Event::Unpause),
"tick" => Ok(Event::Tick),
"video-reconfig" => Ok(Event::VideoReconfig),
"audio-reconfig" => Ok(Event::AudioReconfig),
"metadata-update" => Ok(Event::MetadataUpdate),
"seek" => Ok(Event::Seek),
"playback-restart" => Ok(Event::PlaybackRestart),
"property-change" => {
let id = event
.get("id")
.ok_or(Error(ErrorCode::MissingValue))?
.as_u64()
.ok_or(Error(ErrorCode::ValueDoesNotContainUsize))?
as usize;
let property_name = event
.get("name")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?;
match property_name {
"path" => {
let path = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.as_str()
.map(|s| s.to_string());
Ok(Event::PropertyChange {
id,
property: Property::Path(path),
})
}
"pause" => {
let pause = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.as_bool()
.ok_or(Error(ErrorCode::ValueDoesNotContainBool))?;
Ok(Event::PropertyChange {
id,
property: Property::Pause(pause),
})
}
// TODO: missing cases
_ => {
let data = event
.get("data")
.ok_or(Error(ErrorCode::MissingValue))?
.clone();
Ok(Event::PropertyChange {
id,
property: Property::Unknown {
name: property_name.to_string(),
// TODO: fix
data: MpvDataType::Double(data.as_f64().unwrap_or(0.0)),
},
})
}
}
}
"chapter-change" => Ok(Event::ChapterChange),
"client-message" => {
let args = event
.get("args")
.ok_or(Error(ErrorCode::MissingValue))?
.as_array()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))?
.iter()
.map(|arg| {
arg.as_str()
.ok_or(Error(ErrorCode::ValueDoesNotContainString))
.map(|s| s.to_string())
})
.collect::<Result<Vec<String>, Error>>()?;
Ok(Event::ClientMessage { args })
}
_ => Ok(Event::Unimplemented),
}
})
}

1
src/api_extension.rs → src/highlevel_api_extension.rs
View File

@ -29,6 +29,7 @@ pub enum Switch {
Toggle,
}
/// The `MpvExt` trait provides a set of typesafe high-level functions to interact with mpv.
// TODO: fix this
#[allow(async_fn_in_trait)]
pub trait MpvExt {

12
src/lib.rs
View File

@ -1,7 +1,11 @@
mod api;
mod api_extension;
mod highlevel_api_extension;
mod core_api;
mod error;
mod event_parser;
mod ipc;
mod message_parser;
pub use api::*;
pub use api_extension::*;
pub use highlevel_api_extension::*;
pub use core_api::*;
pub use error::*;
pub use event_parser::*;